Question

我正在Android上构建一个水提醒应用程序，并希望每天安排有限数量的警报，在特定时间（由用户设置）后停止，并在第二天重新启动而无需用户打开应用程序。我该怎么做呢？

我无法看到如何设置重复警报，因为我希望它们在某一点停止并在第二天重新启动，重复警报不会这样做。我如何实现这一目标？

Answer 1

您可以设置两个警报，第一个是用于提醒的重复警报。另一个警报用于在特定时间停止第一个警报，然后安排第二天的警报。

Answer 2

这是我的示例代码。这可能会对你有所帮助，但我不确定。

MainActivity：

public static int NOW_NOTIFICATION = 101; 

Intent intent = new Intent(MainActivity.this, NotificationReceiver.class);
                intent.putExtra(NotificationReceiver.NOTIFICATION_MESSAGE, "Sample Alert");
                PendingIntent pendingIntent = PendingIntent.getBroadcast(
                        MainActivity.this, NOW_NOTIFICATION, intent, PendingIntent.FLAG_ONE_SHOT);

                cancelNotification(NOW_NOTIFICATION);
                AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
                alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
                        + (2 * 1000), pendingIntent);

取消通知：

public void cancelNotification(int requestCode) {
        try {
            Intent notificationIntent = new Intent(getApplicationContext(), NotificationReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), requestCode, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
            AlarmManager alarmManager = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
            alarmManager.cancel(pendingIntent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

NotificationReceiver：

public class NotificationReceiver extends BroadcastReceiver {
    public static String NOTIFICATION_MESSAGE = "notificationMessage";


    @Override
    public void onReceive(Context context, Intent intent) {
        String message = intent.getStringExtra(NOTIFICATION_MESSAGE);
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        //Define sound URI
        Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        Intent notificationIntent = new Intent(context, EmptyActivity.class);
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
        final DateTime dateTime = DateTime.now();
        int color = 0xffffaa00;
//        int color1 = context.getColor(R.color.notificatinBackgroundColor);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        builder.setSmallIcon(R.drawable.festi_push_message_small);
        builder.setContentIntent(pendingIntent);
        builder.setContentTitle("Notification Sample");
        builder.setAutoCancel(true);
        builder.setContentText(message + ", Current Time : " + dateTime.getHourOfDay() + ":" + dateTime.getMinuteOfHour() + ":" + dateTime.getSecondOfMinute());
        builder.setSound(soundUri);
        builder.setLights(Color.RED, 1000, 1000);
        builder.setColor(color);


        Notification notification = builder.build();

        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        notificationManager.notify(102938, notification);
    }

}

DateChangedReceiver：

public class DateChangedReceiver extends BroadcastReceiver {
    public static String NOTIFICATION_MESSAGE = "notificationMessage";

    public static int NOW_NOTIFICATION = 101;

    Context context;

    @Override
    public void onReceive(Context context, Intent intent) {
        this.context = context;
        Intent intentNitification = new Intent(context, NotificationReceiver.class);
        intentNitification.putExtra(NotificationReceiver.NOTIFICATION_MESSAGE, "Sample Alert");
        PendingIntent pendingIntent = PendingIntent.getBroadcast(
                context, NOW_NOTIFICATION, intentNitification, PendingIntent.FLAG_ONE_SHOT);

        cancelNotification(NOW_NOTIFICATION);
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
                + (2 * 1000), pendingIntent);
    }

    public void cancelNotification(int requestCode) {
        try {
            Intent notificationIntent = new Intent(context, NotificationReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getBroadcast(context, requestCode, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
            AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
            alarmManager.cancel(pendingIntent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

AndroidManifiest：

<receiver android:name=".NotificationReceiver" />

        <receiver android:name=".DateChangedReceiver">
            <intent-filter>
                 <action android:name="android.intent.action.DATE_CHANGED" />
            </intent-filter>
        </receiver>

AlarmManager和BroadcastReceiver的多个警报

2 个答案: